A best basis wavelet packet image compression;

In the study of brain-computer interfaces,a method based on best basis of wavelet packet decomposition was proposed.

The paper introduces a new approach of image compression,which finds the best basis in wavelet packets by using Shanon-Weaker entropy criterion.

The degeneration and contradiction of optimal basis in linear programming

But in research it is found that if the problem has multiple solutions, the optimal solutions of interior point method will converge to the interior of the optimal face, and cutting planes can not be generated correctly due to the failure of identification of optimal base, which lead to the failure.

The paper discusses the concavity of the risk function of the stocks combinatiom and the efficient boundary,and puts foward a method of establishing the efficient boundary in section,which is based on the mathod of converting the quadratic plan into the linear plan according to the optimal base and sensitivity analysis.

This paper discusses the concavity of the risk function and the efficient boundary of the portfolio selection,and puts forward a method of establishing the efficient boundary in section with no short selMng,which is based on the method of converting the quadratic plan in to the linear plan according to the optimal base and the sensitivity analysis.

The optimal basis matrix would influence the solving-problem of source management if the optimal solution is the degenerated optimal solution or the infinite-group optimal solutions.

Its optimal solution is influenced by optimal basis matrix of model of production plan s optimization for which this influence is discussed from three aspect.

In order to effectively and automaticly analyze the audio data to produce the index, the best base of different style must be used which depends on the transform of the different types of audio data.